Sunday, March 24, 2019

Velleman K4040

My second amp was the big, hot and heavy K4040 from Velleman (the schematic and assembly manual for the original K4040 is available from Velleman).

Contrary to some reviews, I found this amp sounding rather nice, particularly after I replaced the EL34 tubes in the output stage with separately purchased matched quads.

However, the sound did not quite match the price, so I modified this amplifier, leaving little of the original design.

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